[Isocops] IBEX Orbit# 114 ATS - approve
Mark Tapley
mtapley at swri.edu
Wed Feb 9 14:36:36 EST 2011
All,
I have looked at the Orbit 114 ATS v001
(IBEX_2011_049_00_00_v001.txt) and I approve.
The standard "PL mode unknown at the beginning" constraint
violation is the only one.
The PL commands match the STF v002 file
(IBEX_2011_049_11_52_v002.stf) per Ken's script (thanks again, Ken!).
PL ascending operations make sense WRT 15 Re ascending time.
PL descending operations occur 17 hours early WRT 15 Re descending;
this is expected, due to the sun-pointing maneuver at the end of
Orbit 113, and matches the STF.
Ground station times match S/C times for all 3 contacts. The
last contact appears to be well into Orbit 115.:
2011-02-26T09:25:42.556Z,15RECrossing,direction:asc,orbit:115
@ECT_SetRelay stx,on $TIME=2011/02:26:16:43:00
Battery cell balancing is > 1 hour after burn, but only 13
minutes after the dump contact. It ends >> 1 hour before anything.
The sun-pointing maneuver this orbit is back to an inertial
burn. Ibex_rotate says we are pointing in safe directions at burn
time, at the following 15 Re ascending, and at the following 15 Re
descending:
[tapley at ena ~]$ ibex_rotate -o -u
0.9255716726750616,-0.3474148475029152,-0.15039947631562695 -w
ibex-sun -t 2011/02:25:18:37:00
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.925572,-0.347415,-0.150399
which is R.A. +339.426 Decl. -8.650
missing R.A. +338.384 Decl. -9.091 (ibex-sun)
error is R.A. +1.042 Decl. +0.441
for a total 1.120 deg
[tapley at ena ~]$ ibex_rotate -o -u
0.9255716726750616,-0.3474148475029152,-0.15039947631562695 -w
ibex-sun -t 2011-02-26T09:25:42.556Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.925572,-0.347415,-0.150399
which is R.A. +339.426 Decl. -8.650
missing R.A. +338.995 Decl. -8.818 (ibex-sun)
error is R.A. +0.432 Decl. +0.168
for a total 0.459 deg
[tapley at ena ~]$ ibex_rotate -o -u
0.9255716726750616,-0.3474148475029152,-0.15039947631562695 -w
ibex-sun -t 2011-03-05T07:03:31.794Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI +0.925572,-0.347415,-0.150399
which is R.A. +339.426 Decl. -8.650
missing R.A. +345.444 Decl. -6.242 (ibex-sun)
error is R.A. +6.017 Decl. +2.408
for a total 6.434 deg
O-mode coming up orbit 115 as well.
At 3:50 -0500 2/9/11, Ibex Mission Operations wrote:
>Guys,
> Here is the ATS and planning files for Orbit# 114. Please
>review/approve them by COB today.
>The ATS will be uploaded during one of the contacts lsted below.
>IBEX,USAK01,ADD,02/10/11,041,08:45:00,02/10/11,041,09:45:00,,LAHO
>160K IBEX Orbit# 112 SSR_Dump/Tracking Contact
>IBEX,AUWA01,ADD,02/11/11,042,01:45:00,02/11/11,042,02:20:00,,LAHO
>40K IBEX Orbit# 112 Tracking Contact
--
- Mark 210-379-4635
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